I had the same thing (ish) a heterotopic pregnancy, ruptured ectopic, laparotomy converted from laparoscopy.
Mine was mis-diagnosed as being a twin pregnancy, with both twins in the uterus, the ectopic was actually corneal and very hard to spot with ultrasound so not really their fault. When it ruptured they had to abort the other baby to save my life/complete the repair to my uterus.
A hideous experience, physical recovery wise I took 7 weeks off work, but could easily have gone back after 5. I took 2 more as I had full sick pay anyway, and needed to mentally get back to full health. I remember crying on DH a few days after the surgery and just thinking I'd never be happy again - quite a bit of that was the hormone crash though. MN miscarriage boards were a great support, and so was doing things like buying a special piece of jewellery to remember my twins.
The early days I didn't go out much, just focused fully on eating well, very gentle walking, a bit further each day, and looking after myself. I did find some of the fussing over me (not from DH, but other family members) annoying, I dislike being the centre of attention though!
Happily, I'm now 32 weeks pregnant with my first DC, conceived 10months after the ectopic. I'm having an ELCS, but that was due to the nature of the ectopic rather than the laparotomy. And although it was a hideous experience, I'm glad in a slightly twisted way that I had it - it's made me appreciate family, friends, DH and this pregnancy, as well as the NHS.
PM me if you want to talk any further x